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Aqueous lubricant used for papermaking, preparation method and application thereof

A lubricant and water-based technology, which is applied in the field of papermaking, can solve problems such as complex processes, and achieve the effects of simple preparation process, improved gloss, and improved smoothness

Active Publication Date: 2015-01-21
JINING MING SHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention patent is limited to the emulsion prepared by several emulsifiers and oxidized polyethylene wax, and the process is complicated

Method used

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  • Aqueous lubricant used for papermaking, preparation method and application thereof
  • Aqueous lubricant used for papermaking, preparation method and application thereof
  • Aqueous lubricant used for papermaking, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The present embodiment provides a water-based lubricant for papermaking, which is obtained according to the following steps:

[0029] (1) Add 5g of oleic acid, 5g of sodium hydroxide and 110g of deionized water into the reaction kettle, stir evenly, heat up to 98°C, and set aside;

[0030] (2) Add 100g of oxidized polyethylene wax into the reaction kettle at 130°C, melt for 0.2 hours, and set aside;

[0031] (3) Add (2) into (1) and mix evenly at 98°C while stirring, and keep warm for 0.2 hours;

[0032] (4) Cool down to 25° C., filter, add 0.01 g of bronopol, continue to stir for 10 minutes, and filter the material with a 100-mesh sieve.

[0033] The obtained water-based lubricant has a weight solid content of 49.8 wt%, a viscosity of 460 mPa·s (measured by a viscometer selected from NDJ-1), and a pH value of 6.15 (measured by a PHS-3C precision pH meter).

Embodiment 2

[0035] The present embodiment provides a water-based lubricant for papermaking, which is obtained according to the following steps:

[0036] (1) Add 40g of stearic acid, 30g of diethanolamine, 5g of sodium lauryl sulfate and 1574.8g of deionized water into the reaction kettle, stir evenly, heat up to 80°C, and set aside;

[0037] (2) At 90°C, add 100g of oxidized polyethylene wax into the reaction kettle, melt for 2 hours, and set aside;

[0038] (3) Add (2) into (1) and mix evenly at 80°C while stirring, and keep warm for 2 hours;

[0039] (4) Cool down to 25° C., filter, add 0.2 g of 2-methyl-4-isothiazolin-3-one, continue stirring for 10 minutes, and filter the material through a 100-mesh sieve.

[0040] The obtained water-based lubricant has a weight solid content of 10.2 wt%, a viscosity of 10 mPa·s (measured by a viscometer selected from NDJ-1), and a pH value of 9.83 (measured by a PHS-3C precision pH meter).

Embodiment 3

[0042] The present embodiment provides a water-based lubricant for papermaking, which is obtained according to the following steps:

[0043] (1) 20g of palmitic acid, 10g of triethanolamine, 5g of potassium hydroxide, 2g of sodium dodecylbenzenesulfonate, 1g of polyoxyethylene (20) sorbitan monooleate (Tween 80) and 532g of Add ionized water into the reaction kettle, stir evenly, heat up to 90°C, and set aside;

[0044] (2) At 110°C, add 100g of oxidized polyethylene wax into the reaction kettle, melt for 2 hours, and set aside;

[0045] (3) Add (2) into (1) and mix evenly at 90°C while stirring, and keep warm for 2 hours;

[0046] (4) Cool down to 25°C, filter, add 0.07g 5-chloro-2-methyl-4-isothiazolin-3-one, 0.05g 2-methyl-4-isothiazolin-3-one, continue stirring After 10 minutes, filter the material with a 100-mesh sieve.

[0047] The obtained water-based lubricant has a weight solid content of 20.3 wt%, a viscosity of 35 mPa·s (measured by a viscometer selected from NDJ...

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Abstract

The invention provides an aqueous lubricant used for papermaking, a preparation method and an application of the aqueous lubricant in paper coating. The preparation method is characterized in that oxidized polyethlene wax, fatty acid, alkali, a surfactant, a bactericide and water are mixed to obtain an aqueous polymer. The aqueous lubricant used in a papermaking paint for coated paper is capable of obviously increasing smoothness of coated paper and improving the glossiness of paper, paper whiteness is not influenced, and preparation technology is simple.

Description

technical field [0001] The invention relates to a papermaking technology, in particular to a water-based lubricant for papermaking, its preparation method and its application in papermaking coating. Background technique [0002] Lubricant is one of the trace additives in coated paper coatings, and it plays an important role in improving the coating structure of coated paper. Lubricants can improve the leveling and lubricity of paper coatings, enhance adhesion, impart smoothness and gloss to paper coatings, increase plasticity, prevent cracking, and improve the printing adaptability of coated paper. [0003] Lubricants generally contain hydrophobic groups in chemical composition, which have lubricating effect and release effect. The so-called lubricating effect refers to the effect of reducing the friction, wear and friction heat of the contact surface; the so-called release effect refers to the effect of reducing the adhesion of the contact surface. Specifically, the lubri...

Claims

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Application Information

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IPC IPC(8): D21H21/06D21H19/18D21H19/14D21H21/36
Inventor 施晓旦尹东华
Owner JINING MING SHENG NEW MATERIALS CO LTD
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